One last observation to clear something up. There is very little correlation between a nuclear bomb attack and the disaster at Chernobyl. Beyond the fact that nuclear fission is involved in both, almost none. A nuclear reactor almost never can explode. The only reason Chernobyl 4 did is because of extraordinarily dangerous construction and a staggeringly long list of blatant procedural violations. The explosion of Chernobyl 4 was essentially a dirty bomb, thus the radiation fallout and spread is vastly different and cannot be an indication of what you could expect after a nuclear weapon detonation. It is, on the other hand, very informative as to how a dirty bomb attack might work, although any dirty bomb could not possibly match the scale, and wouldn't involve the many extra complications of the vast amount of unspent fuel that is now out of the reactor.
"The assumption that animals are without rights, and the illusion that our treatment of them has no moral significance, is a positively outrageous example of Western crudity and barbarity. Universal compassion is the only guarantee of morality."